Metacognitive Myopia in Hidden-Profile Tasks: The Failure to Control for Repetition Biases.

Front Psychol · 2018 · PMC5996453 · PMID 29922208

Europe PMC DOI

hedged sentences

0.0010

closest p · 0.0× alpha

0.0840

boldest claim

The sentences

highly significantp < 0.001actually significant

When participants did not receive a warning that selective repetitions came from speakers with vested interests, the repetition-contrast score was positive and highly significant, M = +28.34, SD = 25.82 [20.76; 35.92], t (46) = 7.60, d = 2.22, p < 0.001.

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marginally significantp = 0.084so close (0.05 < p ≤ 0.1)

An explicit warning to discount repetitions slightly increased the baseline-contrast score to a marginally significant level, M = +7.97, SD = 26.94 [-1.14; 17.08], t (35) = 1.78, d = 0.60, p = 0.084.

also in 26,082 other papers

fell short of significancep = 0.084so close (0.05 < p ≤ 0.1)

Due to the restricted reliability of this single-item measure, though, both the repetition-contrast, M = +12.42, SD = 58.01 [-0.17; 25.01], t (83) = 1.96, d = 0.43, p = 0.053, and the baseline contrast M = +9.78, SD = 51.37 [-1.37; 20.93], fell short of significance, t (83) = 1.75, d = 0.38, p = 0.084.

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